Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. DevTools lets you edit pages on-the-fly and diagnose problems quickly, which helps you build better websites, faster.
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DevTools supports a wide range of common web development tasks. Jump ahead on this page and explore some of DevTools' key features. Don't know where to start or your first time using DevTools? Watch an intro to DevTools.
AI assistance, console insights, code suggestions, auto annotations, and more help you debug more efficiently.
Get a comprehensive and actionable view of your page's performance.
Learn how to inspect resources loaded by your page and edit them from your browser.
Analyze and overwrite network requests and responses on the fly.

Debug with AI

Explore how AI innovations in DevTools let you do more, faster.
Let Gemini help you analyze and improve your website's styling, network, sources, and performance.
Use Gemini to get code suggestions while writing code in the Console and Sources panels.
Understand console messages and errors in DevTools and learn how to fix them - without any copy-pasting.
Give your coding agents the same trusted tools you use to inspect network activity, record traces, and troubleshoot web applications, within your AI workflow.

Connect the Chrome DevTools MCP (Model Context Protocol) server to your tool of choice: Gemini CLI, Claude Code, Cline, Copilot, and more.

Learn more on GitHub

Developer Tooling Tips

Explore our monthly video series taking you through common debugging scenarios in DevTools in a playful way.
Get a tour through the updated Performance panel, showing you how to measure Core Web Vitals (LCP, CLS, INP) and how to get tailored advice from Gemini.
Set sail with DevTools and become a debugging pirate! Discover techniques for emulating focus styles, testing forms with autofill, and resolving backend errors with network overrides.
Explore the power of Al-assisted debugging with Chrome DevTools! Discover how Console Insights, Al assistance for styling, performance, network, and sources can supercharge your workflow.
Explore advanced Network panel techniques, including how to find performance bottlenecks, debug popups, configure network conditions, use shortcuts to determine network request initiators and more.

Get performance insights

A wide range of tools to help you measure and optimize different aspects of your runtime performance: the Performance panel, Lighthouse, and more.
Learn about all the features in the Performance panel: how to record a performance trace, how to view and analyze the trace, and more.
Learn about new DevTools features like CPU throttling calibration to help you base your performance debugging decisions on data from the real world
Learn about the new performance insights, the power of Lighthouse directly in the DevTools Performance panel.

News & updates

What's new in DevTools, Chrome 142

Updated October 28, 2025

Code suggestions in Console and Sources, full performance trace debugging with Gemini, toggle drawer orientation, DevTools MCP server updates, and more.

Deprecating live editing of JavaScript sources in Chrome DevTools

Updated October 22, 2025

Chrome DevTools removes live editing in Chrome 145 (Feb 2026) due to low use and modern alternatives like Hot Module Replacement (HMR).

What's new in DevTools, Chrome 141

Updated September 30, 2025

Chrome DevTools (MCP) for your AI agent, network dependency tree AI support, AI chat export, persisted track configuration in Performance, and more.

Inspect and edit resources

Learn about all the features in the Sources panel: how to view and edit files, debug JavaScript, and set up a workspace.
Get started
Workspace lets you to save changes that you make within DevTools to source code that's stored on your computer. Learn how to set up a workspace in your own projects.
Read tutorial

Analyze network activity

Learn about all the features in the Network panel: inspect response and request bodies, overwrite headers, and more.
Get started
A hands-on tutorial to guide you through common tasks inside the Network panel.
Read tutorial

More tools

Discover all the other features and capabilities in DevTools.
Learn how to view and change a page's DOM.
Learn how to view and change a page's CSS.
Track changes to HTML, CSS, and JavaScript.
Log messages and run JavaScript.
Evaluate website performance.
Find memory issues that affect page performance, including memory leaks, and more.
Inspect, modify, and debug web apps, test cache, view storage, and more.
Inspect and modify animations.
Record, replay, measure user flows, and edit their steps.
Discover a collection of options that affect web content rendering.
Inspect and debug saved addresses.
Find and fix problems with your website.
Make sure that a page is fully protected by HTTPS.
View information and debug media players per browser tab.
Emulate device sensors.
Emulate authenticators.